@keyframes flipOutY {
    from {
        transform: perspective(400px);
    }

    30% {
        transform: perspective(400px) rotate3d(0, 1, 0, -15deg);
        opacity: 1;
    }

    to {
        transform: perspective(400px) rotate3d(0, 1, 0, 90deg);
        opacity: 0;
    }
}

.flipOutY {
    backface-visibility: visible !important;
    animation-name: flipOutY;
}
